Oliver Jetson
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| posted on 22/3/05 at 03:25 PM |
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R1 prop
Need to get my prop made up, was wondering if you guys could take a look at a picture that I have drawn (in my archive called Prop) and tell me what
you think. [I'll be making use of my old crossflow type 9 gearbox mounting point to mount the centre bearing prop support].
Thanks,
Oli
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Coose
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| posted on 22/3/05 at 04:44 PM |
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You want no more than 14deg inclusive angle on any UJ, and a small amount of movement is a good thing to avoid bearings taking a set.
Hope this helps.... 
Spin 'er off Well...
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Oliver Jetson
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| posted on 22/3/05 at 04:52 PM |
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I've been told that there should be no more than 4 degrees? 14 seems like too much?!
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Oliver Jetson
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| posted on 22/3/05 at 04:54 PM |
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Has anyone got any pics of the prop installed for an R1 engined car (preferably locost). I've seen a few pics of blade powered setups, but the
R1 output is higher than the blade.
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Coose
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| posted on 22/3/05 at 04:57 PM |
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+/-7 degrees. Ring Bailey Morris or Dunning & Fairbank to confirm......
Spin 'er off Well...
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shed
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| posted on 22/3/05 at 06:43 PM |
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got my prop for R1 made by bailey morris, don't know if thats any help, but i would give them a ring.
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ChrisGamlin
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| posted on 22/3/05 at 07:49 PM |
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Here's roughly where mine will be looking from the top, although I havent made the engine mounts yet so I will juggle it around a little to get
it straighter.
 
R1 Prop angle
Chris
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Oliver Jetson
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| posted on 23/3/05 at 09:11 AM |
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Chris,
Cheers for that - a few questions though:
Would you recomend to have the centre bearing support on the front half of the prop (as you have in your picture), or on the rear section? I'm
getting mixed/confused views on this - in my picture I drew it with the support on the rear section.
How much elevation is there between your diff output and your engine sprocket output?
Do you have a sliding joint? If so should it be on the front or rear section?
Many Thanks,
Oli
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Coose
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| posted on 23/3/05 at 09:35 AM |
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My centre bearing is in the rear half of the shaft, with a sliding joint just in front of the diff. This is on a live-axle Striker and appears to work
fine. But then the car has only been back on the road for a few days....
My centre bearing is mounted 90mm vertically (to the base) from the old Ford gearbox mount.... Unfortunately I don't have any pics though...
Spin 'er off Well...
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Oliver Jetson
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| posted on 23/3/05 at 10:31 AM |
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Coose - what sort of angles are the various parts of your prop running at?
Oli
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Coose
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| posted on 23/3/05 at 10:51 AM |
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Probably as sharp as Chris's UJ nearest the motor, although at full suspension compression the centre UJ may become as tight as his centre one.
I was within the 14 degree inclusive angle on all UJs though at my last calculation!
I can't remember the other figures off hand I'm afraid.....
Spin 'er off Well...
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ChrisGamlin
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| posted on 23/3/05 at 02:20 PM |
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I might play with it a bit more and improve things over this, although where it is now is better than it was in the blade so Im pretty sure it will be
OK.
If I get time I might move the centre bearing towards the driver a little, or even mount it vertically to get it as close to that side of the chassis
as possible, like this
I
O
I
rather than like this -O- if you see what I mean!
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Coose
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| posted on 24/3/05 at 09:48 AM |
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Chris - that's exactly what Mark Jackson has done in his Lotus 7 S2 'Blade. It works fine!
I was going to suggest that to you to be honest......
Spin 'er off Well...
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Peteff
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| posted on 24/3/05 at 10:03 AM |
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I've done mine vertically on a 3x50mm plate welded to the top and bottom drivers side tunnel rails. It takes less space that way on.
yours, Pete
I went into the RSPCA office the other day. It was so small you could hardly swing a cat in there.
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